Kiln.



No. 737,573. PATB'NTBD SBPT..1, 1903. J. BROWNLOW.

KILN.

APPLIGATION FILED JAN. 21, 1902. No MODEL. 3 SHEETS-SHEET 1.

l l l A 4 'PATBNTED SEPT. 1, 1903. J. BRowNLoW.

' KILN. v APrLIonIoN FILED JAN, 21, 1902.

BHEETSQSHEM 2.

I0 MODEL.

' P AT'ENTED SEPT. i, 19.03.' J.BR0WN L0W.

KILN

3 SHEETS-SHEET 3.

N9 nomi..

`APPLICATION FILED JAN. 21, 1902.'

A@ MK.

UNITED STATES Patented September 1, 1908.

JOSEPH BRowNLow, oF oAToN, ENGLAND.

KILN.

SPECIFICATION forming part of Letters Patent No. 737,573, dateduseptember 1, 1903. Application filed January 2], 1902. Serial No. 90,698. (No model.)

To a/ZZ whom, it my concern:

Be it known that I, JOSEPH BRowNLoW, a' subject of the King of Great Britain, and a resident of Caton, in the county of Lancaster, England, have invented certain new and useful Improvements in or Relating to Kilns, (for which I have applied for a patent in Great Britain, No. 13,833, dated July 8, 1901,) of which the following is a full, clear, and exact specification.

This invention consists of improvements in or relating to kilns; and it consists in providing a means whereby the combustion of the fire is increased by a supply of air which is introduced into the furnace at suitable height and also for providing a means whereby the circulation of the heat in the case ot' arched-chamber continuous kilns is facilitated.

Referring to the annexed drawings, Figure l is an elevation, partly in section, of an intermittent circular kiln to which my invention is applied; Fig. 2, a plan View of continuous kiln, partly in section, constructed according to my invention; Fig. 3, a section through line A B in Fig. 2; Fig. 4, a section through line X Y in Fig. 2.

Referring to Fig. l, a is an annular wall constructed hollow, as shown. Into this hollow Wall the air is conducted by means of the pipes b, the pipes being in such a position, practically midway in the furnace, that the flames or gases acting thereon heat the inner ends thereof, and so cause a better current of air to iiow through same to the interior of the hollow wall, c being suitable adjustable gratings or loovers through which the air passes, through the medium of which the air-supply may be regulated as desired. It will thus be seen that a fresh current of air is introduced to the fire from the furnace d at the point e, thus insuring more perfect combustion thainin the case where the airsupply is brought underneath the kiln.

Referring to Figs. 2, 3, and 4:, in this case the kilns are rectangular and continuous. In each of the chambers f I construct the wall a. Between this wall and the main wall b and loovers or gratings c.

furnaces.

h of the chambers is the space i for the furnace, the fuel to which is dropped down through the holes or apertures j, Figs. 3 and 4. Each of the furnaces is in connection with the outer air by means of the holes or pipes 7c represents convenient apertures to convey the heat generated in one chamberf to the next cha1nber,and so on, and also afford access to the furnace in each chamber. For the purpose of insuring a complete and regular circulation of air or gases in the continuous kilns I arrange a system of channels Z and Z', which are in connection with a main channel Z2, as shown. Into the channels Z I introduce a number of metal or fire-clay socket-pipes n, which are in connection with the outside of the kiln by means of the loover or grating o at suitable points, as shown in Fig. 2, the object of said tubes being that as they become heated air will be drawn into them from the atmosphere and expelled through the nozzles p, and the greater the heat to which these are raised the greater or more complete will be the circulation in the kiln, as the air will be forced from the nozzles p, the channels Z and Z being in connection with the chambers f at m. I may, if ldesired, instead of the holes b aforesaid employ hollow bricks, which would be placed end to end and built within the said wall a, so as to form a continuous passage to the q represents iiues which are in connection with each pair of chambers f by means of passages r, as shown in Fig. 2. These flues q are connected together by one main iiue, which continues along the center of the kiln to the outside of same and is connected to a suitable chimney-shaft, s being the entrance to the chambers.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

In continuous kilns of the class herein described, a system of channels comprising a main channel, for each chamber two smaller channels leading into said main channel, apertures in the top of each chamber connected with one of the two smaller channels In testimony that I claim the foregoing I have hereunto set my hand this 7th day of December, 1901.

'JOSEPH BROVVNLOV.

Witnesses:

JAMES RITCHIE, JOHN PRESTON. 

